I see there is a 26-38 double ring package available from e.13 for the 15.G/ex crank, and I'm wondering if they are in fact 4x104 bolt pattern. Also whether they are 10 speed compatible? I want to use them on my RaceFace Dues cranks, I found out today that the new Turbine 2x10 cranks are 4x120 bcd so those rings will not work for me.